EP0274633B1 - Füllmaterial für Tropfkörper zur Behandlung von Flüssigkeiten sowie Verfahren zur Herstellung und Montage desselben - Google Patents

Füllmaterial für Tropfkörper zur Behandlung von Flüssigkeiten sowie Verfahren zur Herstellung und Montage desselben Download PDF

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Publication number
EP0274633B1
EP0274633B1 EP19870117557 EP87117557A EP0274633B1 EP 0274633 B1 EP0274633 B1 EP 0274633B1 EP 19870117557 EP19870117557 EP 19870117557 EP 87117557 A EP87117557 A EP 87117557A EP 0274633 B1 EP0274633 B1 EP 0274633B1
Authority
EP
European Patent Office
Prior art keywords
strips
filling material
holding sheet
material according
another
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19870117557
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0274633A1 (de
Inventor
Hartwig Basse
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Norddeutsche Seekabelwerke GmbH
Original Assignee
Norddeutsche Seekabelwerke GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Norddeutsche Seekabelwerke GmbH filed Critical Norddeutsche Seekabelwerke GmbH
Publication of EP0274633A1 publication Critical patent/EP0274633A1/de
Application granted granted Critical
Publication of EP0274633B1 publication Critical patent/EP0274633B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/10—Packings; Fillings; Grids
    • C02F3/103—Textile-type packing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1062—Prior to assembly
    • Y10T156/1075—Prior to assembly of plural laminae from single stock and assembling to each other or to additional lamina
    • Y10T156/1077—Applying plural cut laminae to single face of additional lamina
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/17—Three or more coplanar interfitted sections with securing means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/2414—Structurally defined web or sheet [e.g., overall dimension, etc.] including fringe
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24752—Laterally noncoextensive components
    • Y10T428/2476—Fabric, cloth or textile component

Definitions

  • the invention relates to a filling material for trickling filters for the treatment of liquids, in particular for biological wastewater treatment, according to the preamble of claim 1. Furthermore, the invention relates to a method for producing filling material according to the preamble of claim 15 and a method for applying for treating Liquid-serving filling material on a carrier device according to the preamble of claim 21.
  • the fillers mentioned here are mainly used for biological treatment in wastewater technology. They serve to absorb the bacteria required for biological treatment, namely a so-called biological lawn.
  • the performance of a trickling filter fitted with filler material depends on the specific growth area, the bacteria 's hold on it and the all-round, unimpeded wettability of the biological lawn on the filler material by the liquid to be treated.
  • a generic filling material is known from EP-A-0 145 853.
  • the individual strips are clamped onto a support rod by a profile.
  • the stripes thus retain their loose character.
  • trickling filters can be produced only with great effort, because the strips must be hung individually next to one another on the supporting rods so that the profile can then be individually clamped onto the supporting rod.
  • Apart from the associated great manufacturing outlay for the filling material only insufficient securing of the strips on the support rod is ensured.
  • the object of the invention is to create an effective, but nevertheless easy to manufacture and assemble filler material for a trickling filter and a corresponding manufacturing and assembly method.
  • the filling material according to the invention has the characterizing features of claim 1.
  • industrial pre-assembly of larger units is possible. This simplifies the trickling filter assembly on site, because for a trickling filter made from the filling material according to the invention fewer individual parts are required than with the trickling filter made of the filling material according to EP-A-0 145 853.
  • a particularly effective trickling filter is obtained when the filling material consists of several layers of strip-like webs. In this way, a larger number of strips can be assigned to a common holding track.
  • the strips of adjacent layers are expediently offset from one another by about half a strip width, in such a way that the individual strips are “gap” from one another. This results in a particularly uniform distribution of the strips on the filling material and thus an optimal wetting of the same by the liquid to be treated.
  • a particularly advantageous filling material results from the arrangement of openings in the holding track or the production of the same from a network.
  • the holding track placed on top of the supporting beams of the supporting device does not prevent the filling material from being optimally sprinkled with the liquid to be treated.
  • the holding track is placed transversely over the strips and welded to the same. This creates a particularly simple possibility of producing the filling material, since when the retaining track is folded around the supporting beam in a U-shape, the opposite ends of the continuous strips come to lie in two upright draining planes which run parallel to one another. This gives the filling material twice the effective number of strips.
  • the strips for the filling material according to the invention can - depending on the application - be designed differently.
  • woven, but also multifilament threads or foils can be used.
  • the surfaces of the foils can be roughened or structured, in particular the free edges. The latter can be done in a particularly simple manner by stimulating get wavy course to provide a sufficiently large wetting area.
  • the strips can also be produced from a braided or extruded mesh or a mesh tube.
  • Thermoplastic in particular polypropylene, is suitable as the plastic for the types of strips mentioned above.
  • the holding tracks are welded to the strips by means of a plurality of, preferably two, mutually parallel weld seams, in such a way that unwelded edge strips remain on opposite edges of the holding track.
  • two groups of several superimposed layers of adjacent strips are attached to the opposite ends of the holding track, preferably by welding.
  • the filling material in the area of the holding track is only single-layer, which makes it particularly easy to fold over in a U-shape for hanging on the carrying device.
  • the method for producing in particular the invention Filling material has the characterizing features of claim 15. By producing the strips as a result of cutting at least one film unwound from an endless band, these can be assembled in the correct position with little effort for further processing, namely continuously. Another peculiarity of this method is that a larger number of the filler material according to the invention is wound one behind the other on a supply roll. The hanging of the filling materials thus produced on the support device of the trickling filter can be considerably simplified as compared to known packing elements of a comparable type.
  • the strips are structured by moving past corresponding deflection drums and, if necessary, the edges of the strips are stretched.
  • the latter can alternatively also be achieved by cutting the foils accordingly.
  • a method for assembling in particular the invention has the characterizing features of claim 21. This is particularly characterized by an astonishingly simple application of the filling material to the support device, because a large number of pre-assembled strips, namely those connected to one another by a common holding track, need only be removed from the supply roll, so that the individual support beams of the support device are gradually removed to hang with filling material. Threading the two groups out of a plurality of strips between the free spaces of adjacent support beams is simplified here by a fork-shaped threading device with which the strips of the filler material lying flat on the support device after being pulled off the supply roll through the gap spaces on both sides of the respective to be pushed through to the loading beam.
  • the marking strip between the filler material to be applied and the subsequent filler material must be severed only by a corresponding cutting element, for example scissors or a knife, before the strips have completely penetrated through the gap spaces.
  • a corresponding cutting element for example scissors or a knife
  • the filling material placed over a supporting beam is permanently, positively fixed by a corresponding number of fastening elements, for example nails, staples, screws or the like counteracted.
  • FIG. 1 and 2 show an embodiment of the filling material according to the invention, in which a plurality of elongated strips 20 are connected to one another by a central, transverse holding track 21.
  • the individual strips 20 of the filling material are arranged here in three layers 22 and 23 lying one above the other.
  • the two outer layers 22 have an equal number of strips 20.
  • the arrangement of the in FIG the outer layers 22 are strips 20 is approximately the same.
  • the middle layer 23 has one less strip 20.
  • the strips 20 of the middle layer 23 can be arranged offset to those of the two outer layers 22 in such a way that the strips 20 of the middle layer 23 lie centrally between two strips 20 of the outer layers 22, that is to say “on a gap”.
  • the length of the strips 20 is approximately the same in each layer 22 or 23.
  • the strips 20 protrude with approximately the same area to the left and right opposite the holding track 21, each strip running continuously under the holding track 21 and a single strip 20 serving to form both parts of the filling material, namely of the filling material lying on the left or right of the holding track 21.
  • the strips 20 are connected to the holding track 21 by two parallel weld seams 24.
  • the weld seams 24 run parallel to the side edges of the holding track 21 at a distance to form opposite, free edge sections 25.
  • the strips 20 also run between the weld seams 24 without one Connection to one another or to the stop track 21.
  • the holding track 21 has a multiplicity of continuous incisions 26, which are indicated in FIG. 2 by elongated lines.
  • holes or other openings can be arranged in the holding track 21 instead of the incisions 26. It is also conceivable to design the holding track 21 as a network.
  • FIG. 1 shows a plurality of support beams 27 of a support device 28, the filler material according to the invention being suspended on one of the support beams 27.
  • the filling material is U-shaped over the Support beam 27 is laid over, with part of the holding track 21 covering the upper, horizontal surface of the supporting beam 27 and lateral edge regions of the holding track 21 covering most of the opposite, upright surfaces of the supporting beam 27.
  • the sections of the strips 20 projecting to the left and right opposite the holding track 21 thus hang down in parallel planes on both sides of the support beam 27.
  • the opposite edge sections 25 of the holding track 21 project with their free ends at an acute angle from the plane of the strips 20.
  • the opposite edge sections 25 of the holding track 21 form dripping ends 29 for the liquid to be treated, which is sprayed onto the filling material from the top of the carrying device 28.
  • the dripping ends 29 thereby contribute to the optimal wetting of the strips 20 with the liquid to be treated.
  • the wetting of the strips 20 with the liquid to be treated is improved by the incisions 26 arranged in the holding track 21, in that the liquid impinging on the horizontal section of the holding track 21 does not have to flow completely to the side via the draining ends 29; rather, part of the liquid can reach the strips 20 from the top of the holding track 21 through the latter.
  • weld seams 24 connect the three layers 22 and 23 of the strips 20 to one another and to the holding track 21.
  • FIG. 1 a positive locking of the filling material on the support beam 27 is shown in FIG. 1.
  • this consists of one or more nails 30 which are spaced apart are driven from above through the holding track 21 and the strips of the three underlying layers 22 and 23 into the supporting beam 24.
  • FIG. 3 and 4 show a second embodiment of the filling material according to the invention.
  • two separate groups 31 and 32 from a plurality of strips 20 are connected to a holding track 33.
  • Each group 31 and 32 also consists of three layers 35 and 36, namely two outer layers 35 and a middle layer 36.
  • the relative arrangement of the strips 20 in the individual layers 35 and 36 can be made analogously to the first exemplary embodiment.
  • the two groups 31 and 32 of strips 20 are fastened to the holding track 33 in such a way that the upper ends of each group 31 and 32 are welded to the two longitudinal edges 34 of the holding track 33, with the opposite ones in the suspended state of the filling material (Inner) surfaces of the holding track 33. It is also conceivable that in each case one layer 35 is externally welded to the longitudinal edges 34 of the holding track 33, while the other layers 35 and 36 - as shown in FIG. 3 - from the inside the holding track 33 are welded.
  • the holding track 33 has a plurality of rectangular openings 37 distributed uniformly over the surface thereof. As shown in FIG. 3, the openings 37 are opposite each other in the vertical sections of the holding track 33 when the filling material is mounted. The openings 37 also ensure in this embodiment of the filling material that the liquid brought up from above acts on both The sides of the strips 20 of both groups 31 and 32 can be uniformly wetted.
  • the holding tracks 21 and 33 are made of a UV-resistant plastic film, preferably a polypropylene or a polyethylene film, in the filling material of both exemplary embodiments.
  • the holding track 21 or 33 can also be made from a network of the same material.
  • Strips 20, as shown in FIGS. 5 to 7, can be used for the filling material of both of the above-described embodiments. These are strips 20 made of a film, preferably a "rustling film” made of polypropylene or polyethylene. In order to increase the specific surface and to create optimal adhesive properties of the biological lawn on the strips 20, these are treated in a special way in the exemplary embodiment shown.
  • the mutually opposite edge regions 38 of the strips 20 are plastically deformed by stretching or the like, in such a way that the upright edges 39 of the strips 20 have a serpentine course. This can have the sinusoidal curve shown in FIG. 5. However, the edges 39 can also have an irregular shape.
  • the bulges decrease towards the center of the strip 20, namely in such a way that the strips 20 have a central neutral region 40.
  • the strips 20 have a smooth course.
  • This undeformed neutral area 40 of the strips 20 serves to absorb the dead weight of the wetted strips 20, with no significant stretch occurring which could lead to the smoothing of the curved edges 39 due to a tensile load.
  • the production of the strip 20 shown is particularly simple if they have a width of less than 20 mm. Then the strips 20 twist helically in the longitudinal direction after being suspended on the support device 28. This also contributes to the optimal wetting of such strips 20 with the liquid to be treated.
  • FIGS. 2 or 4 shows the ideal relative position of several strips 20 to one another if they have an arrangement of FIGS. 2 or 4, that is to say they are formed from three layers 22, 23 or 35, 36 of strips 20 lying next to one another, the middle layer 23 or 36 is offset from the outer layers 22 and 35, respectively. It is clear that, due to the serpentine edges 39 of the strips 20, uniform spaces 41 are formed between them. In this way, area-by-area bonding of adjacent strips 20 and a related reduction in the effectiveness of the filler material are avoided. Touches can - if at all - only be punctiform because the edges 39 of the strips 20 can only come into contact with adjacent strips 20 in the direction of the surface normal.
  • these can also be produced from reticulated plastic strips or plastic tubes.
  • each layer 22 and 23 of the strips 20 to be produced is formed from a corresponding material web 42 which is continuously drawn off from a material roll 43.
  • the device has three material rolls 43, of which three material webs are uniform 42 are withdrawn and passed to deflection drums 44.
  • the deflection rollers serve here as counterholders for a plurality of knives 45 arranged next to one another with the same spacing. These cut the material webs 42 into strips 20 of approximately the same width.
  • the knives 45 for forming the middle layer 23 are arranged offset to the knives 45 of the outer layers 22. Staggered cuts automatically result in staggered strips 20, namely at a gap.
  • the edges 39 can be simultaneously stretched during cutting, so that no further operation is required for this.
  • each material web 42 After the material webs 42 have been cut into corresponding strips 20, they are brought together between a pair of rollers 46.
  • the lateral surface of at least one roller of this pair of rollers 46 can be provided with a corresponding profiling for structuring the strips 20 to be brought together.
  • a finishing zone 47 follows.
  • the strips 20 are connected to the transverse holding track 21, which, as can be seen in FIG. 9, is also endlessly arranged by a transverse to the material rolls 43 Material roll 59 removed.
  • the strips 20 and the holding track 21 are currently at a standstill, they are welded together by a pair of transverse welding jaws 48 and 49, which bring about welding under the action of heat and momentary compression.
  • the (upper) welding jaw 48 has on its underside two parallel ribs 50, which form two parallel contact strips to the holding track 21 during welding.
  • the transition from one filler material to the next filler material is marked by the formation of a marking strip 57 by a sealing device 51 arranged at a distance from the welding jaws 48 and 49 (viewed in the working direction of the device).
  • the finished filler material is passed via a deflection roller 52 to a storage drum 53, on which the finished filler material is suspended in succession.
  • the filling material wound up one after the other on the storage drum 53 can then be gradually suspended on the supporting beams 27 of the supporting device 28 during the production of the trickling filter.
  • FIG. 10 schematically shows the assembly of the filling material according to the invention.
  • a rolling frame 54 with the storage drum 53 is placed on the support device 28 from support beams 27 lying next to one another in a horizontal plane at a distance.
  • the filling material is then gradually withdrawn from the storage drum 53, always until the holding track 21 or 33 comes to lie approximately centrally over the supporting beam 27 to be provided with the filling material.
  • the holding track 21 or 33 with strips 20 attached to it is then fastened to the upper, horizontal surface of the supporting beam 27 by one or more nails 30.
  • a U-shaped mounting fork 55 the strips 20 on both sides of the holding track 21 and 33 through the gaps located on both sides next to the respective support beam 27 pushed through until the free ends of the strips 20 hang freely.
  • the free ends of the strips 20 directed towards the storage drum 53 may have to be separated from the subsequent filler material by severing the marking strip 57 produced by the sealing device 51 to the subsequent filler material, either by tearing or cutting.
  • the filling material according to the invention of both exemplary embodiments can be suspended on the further supporting beams 27 of the supporting device 28 for the complete completion of the trickling filter.

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  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Microbiology (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Biological Treatment Of Waste Water (AREA)
  • External Artificial Organs (AREA)
  • Laminated Bodies (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
  • Filtering Materials (AREA)
  • Drying Of Solid Materials (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
EP19870117557 1986-12-09 1987-11-27 Füllmaterial für Tropfkörper zur Behandlung von Flüssigkeiten sowie Verfahren zur Herstellung und Montage desselben Expired - Lifetime EP0274633B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3641960 1986-12-09
DE19863641960 DE3641960A1 (de) 1986-12-09 1986-12-09 Fuellmaterial fuer tropfkoerper zur behandlung von fluessigkeiten sowie verfahren zur herstellung und montage desselben
CA 614657 CA1330459C (en) 1986-12-09 1989-09-28 Filling material for percolating filters for the treatment of liquids and process for producing and assembling it

Publications (2)

Publication Number Publication Date
EP0274633A1 EP0274633A1 (de) 1988-07-20
EP0274633B1 true EP0274633B1 (de) 1991-08-21

Family

ID=25673163

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870117557 Expired - Lifetime EP0274633B1 (de) 1986-12-09 1987-11-27 Füllmaterial für Tropfkörper zur Behandlung von Flüssigkeiten sowie Verfahren zur Herstellung und Montage desselben

Country Status (13)

Country Link
US (1) US4929484A (no)
EP (1) EP0274633B1 (no)
JP (1) JP2720968B2 (no)
AT (1) ATE66437T1 (no)
AU (1) AU595402B2 (no)
CA (1) CA1330459C (no)
DE (2) DE3641960A1 (no)
DK (1) DK169065B1 (no)
ES (1) ES2025620T3 (no)
FI (1) FI92815C (no)
NO (1) NO173493C (no)
NZ (1) NZ222650A (no)
PT (1) PT86290B (no)

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DE3728031A1 (de) * 1987-08-22 1989-03-02 Meboco Gmbh & Co Kg Vorrichtung zur anaeroben behandlung von biomasse
DE3807695A1 (de) * 1988-03-09 1989-09-21 Norddeutsche Seekabelwerke Ag Fuellmaterial und verfahren zur herstellung derselben
ES2032064T3 (es) * 1988-03-09 1993-01-01 Norddeutsche Seekabelwerke Aktiengesellschaft Material de relleno para tratar liquidos, y procedimiento para la fabricacion del mismo.
DE8811851U1 (de) * 1988-09-19 1989-07-06 ME/BO/CO Verfahrenstechnik GmbH & Co. KG, 2807 Achim Filter zur Reinigung von Fluiden
BE1003962A3 (fr) * 1989-07-20 1992-07-28 Gilson Robert Filtre biologique immergeable pour l'epuration des eaux usees.
US5284587A (en) * 1991-12-20 1994-02-08 General Environmental Science Bacteria-containing polymer gel for waste water treatment
DE4338480A1 (de) * 1993-08-26 1995-03-02 Norddeutsche Seekabelwerke Ag Füllmaterial für Tropfkörper zur Behandlung von Fluiden sowie Verfahren zur Herstellung desselben
DE19821577A1 (de) * 1998-03-20 1999-09-23 Norddeutsche Seekabelwerk Gmbh Füllmaterial für Tropfkörper zur Behandlung von Fluiden sowie Verfahren zur Herstellung desselben
DE19817312A1 (de) * 1998-04-18 1999-10-21 Norddeutsche Seekabelwerk Gmbh Füllmaterial für Tropfkörper und Verfahren zum Herstellen desselben
DE19947517A1 (de) * 1999-10-01 2001-04-05 Norddeutsche Seekabelwerk Gmbh Vorrichtung zur Behandlung von Fluiden und Verfahren zur Herstellung derselben
US6881340B2 (en) * 2002-03-28 2005-04-19 Bioprocess Technologies Ltd. Wastewater trickle tower(s) controlling and grooming
US6905602B1 (en) 2002-08-29 2005-06-14 Keith Dobie Method and apparatus to enhance denitrification of effluent
US6939462B2 (en) * 2003-02-27 2005-09-06 Bioprocess Technologies, Ltd. Wastewater trickle tower biomedia with casing
US20050084650A1 (en) * 2004-07-01 2005-04-21 Ann Pollard Fabric throw apparatus and method of assembly
EP1973852B1 (en) * 2005-12-27 2013-07-03 Bioprocess H2O LLC Biomedia apparatus and method of use
AU2009308283B2 (en) * 2008-10-24 2014-07-17 Bioprocessh20 Llc Systems, apparatuses and methods for cultivating microorganisms and mitigation of gases
US20100105125A1 (en) * 2008-10-24 2010-04-29 Bioprocessh20 Llc Systems, apparatuses and methods for cultivating microorganisms and mitigation of gases
US8809037B2 (en) * 2008-10-24 2014-08-19 Bioprocessh20 Llc Systems, apparatuses and methods for treating wastewater
US20120118819A1 (en) * 2010-11-11 2012-05-17 Israel Amichay Bachar In-situ, microbial bio-remediation of aquatic environments

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DE2532344A1 (de) * 1975-07-19 1977-02-03 Geiger Maschf Helmut Tropfkoerperfuellung aus annaehernd lotrechten, flaechigen elementen
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Also Published As

Publication number Publication date
AU8167787A (en) 1988-06-09
NZ222650A (en) 1990-04-26
FI874928A0 (fi) 1987-11-06
PT86290A (pt) 1989-01-17
NO874688D0 (no) 1987-11-11
DE3772367D1 (de) 1991-09-26
NO173493C (no) 1993-12-22
JP2720968B2 (ja) 1998-03-04
ATE66437T1 (de) 1991-09-15
JPS63232893A (ja) 1988-09-28
FI92815C (fi) 1995-01-10
CA1330459C (en) 1994-06-28
NO874688L (no) 1988-06-10
DK169065B1 (da) 1994-08-08
NO173493B (no) 1993-09-13
DK588987A (da) 1988-05-10
US4929484A (en) 1990-05-29
DK588987D0 (da) 1987-11-10
EP0274633A1 (de) 1988-07-20
PT86290B (pt) 1993-08-31
DE3641960A1 (de) 1988-06-16
FI874928A (fi) 1988-06-10
FI92815B (fi) 1994-09-30
ES2025620T3 (es) 1992-04-01
AU595402B2 (en) 1990-03-29

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